Williams told Zap2it: "I haven't seen it, but I'm sure it will be wonderful. I don't know if they've used any of the original music or not; it's a Warner Bros film, in which case, they certainly have the right to do so [having also made the earlier Superman movies].

"I hope it will be successful, and I look forward to seeing it."

The 81-year-old admitted that he has mixed feelings about the reboot.

"It puts me in mind of the late Chris Reeve, who we all loved so much. It's going to be hard for me not to let go of the music, but to let go of the idea of Superman being Chris.

"I thought he not only made that project successful, he embodied what all of us imagine Superman to look like if he could be given skin and bone, I think," he added.